Theory Colloquium

A Higgs Mass Prediction: 141 +- 2 GeV

by Lawrence Hall (University of California Berkeley)

Europe/Zurich
TH Theory Conference Room (CERN)

TH Theory Conference Room

CERN

Description
If supersymmetry is broken directly to the Standard Model at energies not very far from the unified scale, the Higgs boson mass lies in the range (128 – 141) GeV. The end points of this range are tightly determined. Theories with the Higgs boson dominantly in a single supermultiplet predict a mass at the upper edge, which is remarkably insensitive to the supersymmetry breaking scale and to supersymmetric threshold corrections. Verification of this prediction would provide strong evidence for supersymmetry, broken at a very high scale, and also for a Higgs boson that is elementary up to this high scale, implying fine-tuning of the Higgs mass parameter by ≈ 25 orders of magnitude. Currently, the only known explanation for such fine-tuning is the multiverse.